To be a modern-day Chiropractor in Grand Rapids MI, I am effectively aware of the astigmatism of Chiropractic treatment. Having said that, we are literally a doctor in Science with research demonstrating the measurements in degrees to the purely natural curve with the spine. Wager you didn't know that! http://collinzpbmx.look4blog.com/19802203/the-most-beneficial-chiropractor-in-grand-rapids